CN105312898B - The mechanical device and assembly method of a kind of square ball valve automatic setup system - Google Patents
The mechanical device and assembly method of a kind of square ball valve automatic setup system Download PDFInfo
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- CN105312898B CN105312898B CN201510824045.5A CN201510824045A CN105312898B CN 105312898 B CN105312898 B CN 105312898B CN 201510824045 A CN201510824045 A CN 201510824045A CN 105312898 B CN105312898 B CN 105312898B
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- motor
- valve
- chuck
- rubber blanket
- square
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P21/00—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
- B23P21/002—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control the units stationary whilst being composed
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automatic Assembly (AREA)
- Valve Housings (AREA)
Abstract
The invention discloses a kind of mechanical device of square ball valve automatic setup system and assembly method, the mechanical device includes gas chuck, chuck is connected with air motor one, rubber blanket is set above chuck, air cylinder pressure plate is arranged on above rubber blanket, motor is connected by shaft coupling with main transmission connector, main transmission connector is connected through air cylinder pressure plate and with rubber blanket, chuck side sets cylinder and air motor two, cylinder is connected with air cylinder pressure plate, air motor two is connected with drive socket end, and Pneumatic check valve is set below chuck；The assembly method is clamped including valve body, bonnet is screwed, valve element is inflated and assembling finishes four steps of dismounting.The present invention realizes square ball valve automatic assembling, automatic inflating integrated process, improves square ball valve efficiency of assembling and production quality, reduces labor strength.
Description
Technical field
The present invention relates to a kind of mechanical device of square ball valve automatic setup system and assembly method.
Background technology
Square ball valve is widely used because its is simple in construction, dependable performance in petroleum industry.Square ball valve knot
Structure mainly includes valve body, valve element, bonnet, valve knob and sealing ring.Square ball valve is in assembling process, the elastic journey that bonnet is installed
The assembling quality for spending square shaped ball valve is most important.When bonnet installation is more loose, the seal of square ball valve is certain because not bearing
Installation pretightening force, causes occur oil leakage phenomenon in the course of work；If bonnet installs tension, installation pretightening force is excessive, and valve is opened
Close it is extremely difficult, while the infringement to seal is also very big.Therefore, square shaped ball valve is pacified in the installation process of square ball valve
The pretightning force requirement of dress is very strict, it is necessary to strictly be controlled it.In addition, in order to further examine square valve body after assembling
Air-tightness, it is necessary to square shaped valve body carry out air tight test.
At present, the installation of square ball valve relies primarily on the assembling for manually carrying out square valve body, and installer needs to utilize hand
The valve knob of the square ball valve of wrench reciprocating rotary, impression assembling tightness, judges whether installation accords with according to experience
Close and require.In addition, in order to examine the square valve air-tightness after assembling, it is necessary to carry out air-leakage test to valve.Air-tightness is examined
Survey and blocked using the outlet of square shaped ball valve one, gases at high pressure filling is carried out to valve from the other end.Inflate after a period of time,
Pressure closes valve when reaching predetermined pressure, to cause square ball valve core inner that filled with gases at high pressure, square ball valve is inserted into water
In, see whether gas leak phenomenon and then carry out air-leakage test.As can be seen here, the installation process of square ball valve include install and
Two processes are inflated, and relies on and is accomplished manually, there is that following some is not enough in installation process：1st, square valve assembling and inflator
Sequence is disperseed, and influences the production cycle of whole product；2nd, the assembling of shape valve and gas replenishment process are artificial operation, efficiency of assembling is low,
Labor intensity is big；3rd, the assembling quality of product is influenceed by technical ability, the experience of workman, it is difficult to ensure product quality stability and
One property.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention provides a kind of square ball valve automatic setup system
Mechanical device and assembly method, realize square ball valve automatic assembling, automatic inflating integrated process, reach the square ball valve dress of raising
With efficiency, the stable prod quality of production, the effect for reducing labor strength.
To achieve these goals, present invention employs following technical scheme：A kind of square ball valve automatic setup system
Mechanical device, including cylinder, air motor one, chuck, air cylinder pressure plate, motor, rubber blanket, air motor two, transmission
Sleeve and Pneumatic check valve；
Chuck is connected with air motor one, sets rubber blanket above chuck, the lower surface of rubber blanket be provided with
The type face that the type face of the bonnet of square ball valve matches is raised, and air cylinder pressure plate is arranged on above rubber blanket, and motor passes through shaft coupling
Device is connected with the top of main transmission connector, and shaft coupling is provided with torque sensor, and the bottom of main transmission connector passes through cylinder pressure
Plate is simultaneously connected with rubber blanket, and the side of chuck sets cylinder and air motor two, and cylinder is connected with air cylinder pressure plate, pneumatic horse
It is connected up to two with one end of drive socket, the other end of drive socket is provided with the square block on the knob of square ball valve to matching
Square opening, Pneumatic check valve is set below chuck, and Pneumatic check valve is connected with external high pressure source of the gas.
Further, the shaft coupling is that spline is connected with main transmission connector, and shaft coupling and main transmission connector
Between coordinate for gap, the main transmission connector and rubber blanket are that type face is connected, and the bottom of main transmission connector is provided with type face
Axle, the upper surface of rubber blanket is provided with the type face matched with the type face axle of main transmission connector.
Further, the air motor two is that spline is connected with drive socket, and air motor two and drive socket
Between for gap coordinate.
Further, the cylinder, air motor one, chuck, motor, air motor two and Pneumatic check valve are solid
It is scheduled in frame.
According to a kind of assembly method of square ball valve automatic setup system of above-mentioned mechanical device, including valve body is clamped, valve
Lid is screwed, valve element inflation and assembling finish four steps of dismounting；
Valve body is clamped：Knob, valve element, bonnet are placed in valve body, valve body is placed on the center of chuck, pneumatic
Motor one drives chuck to clamp in place valve body；
Bonnet is screwed：Motor drives rubber blanket to rotate by main transmission connector, rubber blanket and bonnet positive, and then
Bonnet is driven to be screwed with valve body, the torque sensor being arranged between motor and main transmission connector is carried out to motor output torque
Monitoring, when moment of torsion reaches setting value, motor stalls；
Valve element is inflated：Cylinder moves downward drive air cylinder pressure plate and rubber blanket is compressed, when cylinder can not continue downwards
During motion, stop supplying cylinder, meanwhile, valve element inflation of the external high pressure source of the gas through Pneumatic check valve square shaped ball valve, necessarily
Source of the gas stops supply after time, pulls drive socket, the square opening of drive socket is engaged with the square block on knob, pneumatic
Motor two starts is closed valve element by the rotation of knob；
Assembling finishes dismounting：Cylinder is moved upwards, and air cylinder pressure plate is removed to the load that rubber blanket applies, and then pneumatic horse
Being rotated backward up to one drives its claw of chuck removal to be applied to the clamping force on valve body, pulls drive socket, removal transmission
The cooperation of sleeve and knob, most square ball valve is unloaded at last, and assembling is finished, into next assembling cyclic process.
Beneficial effect：1st, realize square valve assembling integrated with inflation process, simplify square valve assembling and detect
Technological process；2nd, system can realize the automatic assembling of square valve, improve square valve efficiency of assembling；3rd, relative to manual assembly mistake
Craftsmanship and experience influence product assembly quality in journey, automatic setup system can preferably stable prod the quality of production,
Realize that same batch products assemble the homogeneity of quality；4th, system only needs less human assistance, and the work for reducing workman is strong
Degree, has saved assembling labour.The mechanical device and assembly method of the assembly system are overcome in existing square valve assembling process
The many deficiencies existed.
Brief description of the drawings
Fig. 1 is the explosive view of the square ball valve of the present invention；
Fig. 2 is the square ball valve automatic setup system mechanical device isometric side view of the present invention；
Fig. 3 is the square isometric front view of ball valve automatic setup system mechanical device of the present invention；
Fig. 4 is the rubber blanket front view of the present invention；
Fig. 5 is the rubber blanket left view of the present invention；
Fig. 6 is main transmission connector, air cylinder pressure plate, rubber blanket and the bonnet isometric view of the present invention；
Fig. 7 is the power transmission shaft and ball valve knob normal axomometric drawing of the present invention.
In figure：1- frames, 2- cylinders, 3- air motors one, 4- chucks, 5- air cylinder pressure plates, 6- main transmission connectors,
7- shaft couplings, 8- motors, the square ball valves of 9-, 10- rubber blankets, 11- air motors two, 12- drive sockets, 13- Pneumatic check valves,
901- knobs, 902- valve bodies, 903- valve elements, 904- bonnets.
Embodiment：
The present invention is done below in conjunction with the accompanying drawings and further explained.
As shown in Fig. 1 to 7, a kind of mechanical device of square ball valve automatic setup system include cylinder 2, air motor 1,
Chuck 4, air cylinder pressure plate 5, motor 8, rubber blanket 10, air motor 2 11, drive socket 12 and Pneumatic check valve 13.
Chuck 4 is connected with air motor 1, in clamping and unloading process, by one 3 pairs of chucks of air motor
4 are driven, and the top of chuck 4 sets rubber blanket 10, and the lower surface of rubber blanket 10 is provided with the type face phase with bonnet 904
The type face matched somebody with somebody is raised, and air cylinder pressure plate 5 is arranged on the top of rubber blanket 10, the top that motor 8 passes through shaft coupling 7 and main transmission connector 6
Portion is connected, and shaft coupling 7 is provided with torque sensor, the bottom of main transmission connector 6 through air cylinder pressure plate 5 and with the phase of rubber blanket 10
Even, the side of chuck 4 sets cylinder 2 and air motor 2 11, and cylinder 2 is connected with air cylinder pressure plate 5, and air cylinder pressure plate 5 is in gas
Rubber blanket 10 is compressed under the drive of cylinder 2, air motor 2 11 is connected with one end of drive socket 12, and it is driven
Dynamic, the other end of drive socket 12 is provided with the square block on knob 901 to the square opening matched, and the lower section of chuck 4 is set
Pneumatic check valve 13, Pneumatic check valve 13 is connected with external high pressure source of the gas, gases at high pressure after being completed for the assembling of square shaped valve 9
Filling, and then for further air-leakage test.
Wherein, the shaft coupling 7 is that spline is connected with main transmission connector 6, and shaft coupling 7 and main transmission connector 6
Between coordinate for gap, the main transmission connector 6 and rubber blanket 10 are connected for type face, and the bottom of main transmission connector 6 is provided with
Type face axle, the upper surface of rubber blanket 10 is provided with the type face matched with the type face axle of main transmission connector 6；The air motor
2 11 be that spline is connected with drive socket 12, and is coordinated between air motor 2 11 and drive socket 12 for gap；The gas
Cylinder 2, air motor 1, chuck 4, motor 8, air motor 2 11 and Pneumatic check valve 13 are each attached in frame 1.
According to a kind of assembly method of square ball valve automatic setup system of above-mentioned mechanical device, the assembly method includes valve
Body 902 is clamped, bonnet 904 is screwed, valve element 903 is inflated and assembling finishes four steps of dismounting；
Valve body 902 is clamped：Knob 901, valve element 903, bonnet 904 are placed in valve body 902, valve body 902 is placed on four paws
The center of chuck 4, the driving chuck 4 of air motor 1 is clamped in place to valve body 902；
Bonnet 904 is screwed：Motor 8 drives rubber blanket 10 to rotate by main transmission connector 6, rubber blanket 10 and bonnet 904
Positive, and then drive bonnet 904 to be screwed with valve body 902, the moment of torsion being arranged between motor 8 and main transmission connector 6 is passed
Sensor 7 is monitored to the output torque of motor 8, and when moment of torsion reaches setting value, motor 8 stops operating；
Valve element 903 is inflated：Cylinder 2 moves downward drive air cylinder pressure plate 5 and rubber blanket 10 is compressed, when cylinder 2 can not
When continuing to move downward, stopping is supplied to cylinder 2, meanwhile, valve of the external high pressure source of the gas through the square shaped ball valve 9 of Pneumatic check valve 13
Core 903 is inflated, and source of the gas stops supply after certain time, pulls drive socket 12, makes the square opening and knob 901 of drive socket 12
On square block be engaged, air motor 2 11 start be closed valve element 903 by the rotation of knob 901；
Assembling finishes dismounting：Cylinder 2 is moved upwards, and air cylinder pressure plate 5 is removed to the load that rubber blanket 10 applies, Jin Erqi
Dynamic motor 1, which is rotated backward, drives its claw of the removal of chuck 4 to be applied to the clamping force on valve body 902, pulls drive socket
12, the cooperation of removal drive socket 12 and knob 901, most square ball valve 9 is unloaded at last, and assembling is finished, into next assembling
Cyclic process.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (5)
1. a kind of mechanical device of square ball valve automatic setup system, it is characterised in that：Including cylinder (2), air motor one
(3), chuck (4), air cylinder pressure plate (5), motor (8), rubber blanket (10), air motor two (11), drive socket (12) and
Pneumatic check valve (13)；
Chuck (4) is connected with air motor one (3), and rubber blanket (10) is set above chuck (4), rubber blanket (10)
Lower surface is provided with the type face projection matched with the type face of the bonnet (904) of square ball valve (9), and air cylinder pressure plate (5) is arranged on
Above rubber blanket (10), motor (8) is connected by shaft coupling (7) with the top of main transmission connector (6), and shaft coupling (7) is provided with
Torque sensor, the bottom of main transmission connector (6) is connected through air cylinder pressure plate (5) and with rubber blanket (10), chuck (4)
Side cylinder (2) and air motor two (11) is set, cylinder (2) is connected with air cylinder pressure plate (5), air motor two (11) and biography
One end of moving sleeve (12) is connected, the other end of drive socket (12) be provided with it is square on the knob (901) of square ball valve (9)
Pneumatic check valve (13), Pneumatic check valve (13) and external high pressure gas are set below the square opening that block matches, chuck (4)
Source is connected.
2. a kind of mechanical device of square ball valve automatic setup system according to claim 1, it is characterised in that：It is described
Axle device (7) is that spline is connected with main transmission connector (6), and is matched somebody with somebody between shaft coupling (7) and main transmission connector (6) for gap
Close, the main transmission connector (6) is that type face is connected with rubber blanket (10), and the bottom of main transmission connector (6) is provided with type face axle,
The upper surface of rubber blanket (10) is provided with the type face matched with the type face axle of main transmission connector (6).
3. a kind of mechanical device of square ball valve automatic setup system according to claim 1, it is characterised in that：The gas
Dynamic motor two (11) is connected with drive socket (12) for spline, and between air motor two (11) and drive socket (12) being
Gap coordinates.
4. a kind of mechanical device of square ball valve automatic setup system according to claim 1, it is characterised in that：The gas
Cylinder (2), air motor one (3), chuck (4), motor (8), air motor two (11) and Pneumatic check valve (13) are fixed
In frame (1).
5. the method for square ball valve automatic assembling is carried out using mechanical device described in claim 1, it is characterised in that：Including valve body
(902) clamp, bonnet (904) is screwed, valve element (903) inflation and assembling finish four steps of dismounting；
Valve body (902) is clamped：Knob (901), valve element (903), bonnet (904) are placed in valve body (902), valve body (902) is put
The center in chuck (4) is put, air motor one (3) driving chuck (4) is clamped in place to valve body (902)；
Bonnet (904) is screwed：Motor (8) drives rubber blanket (10) to rotate by main transmission connector (6), rubber blanket (10) and valve
(904) positive is covered, and then drives bonnet (904) to be screwed with valve body (902), motor (8) and main transmission connector is arranged on
(6) torque sensor between is monitored to motor (8) output torque, when moment of torsion reaches setting value, and motor (8) stops turning
It is dynamic；
Valve element (903) is inflated：Cylinder (2) moves downward drive air cylinder pressure plate (5) and rubber blanket (10) is compressed, and works as cylinder
(2) when can not continue to move downward, stop supplying cylinder (2), meanwhile, external high pressure source of the gas is through Pneumatic check valve (13) other side
Valve element (903) inflation of shape ball valve (9), source of the gas stops supply after certain time, pulls drive socket (12), makes drive socket
(12) square opening is engaged with the square block on knob (901), and air motor two (11) starts the rotation by knob (901)
It is closed valve element (903)；
Assembling finishes dismounting：Cylinder (2) is moved upwards, and air cylinder pressure plate (5) is removed to the load that rubber blanket (10) applies, and then
Air motor one (3), which is rotated backward, drives its claw of chuck (4) removal to be applied to the clamping force on valve body (902), pulls
Drive socket (12), the cooperation of removal drive socket (12) and knob (901), most square ball valve (9) is unloaded at last, has assembled
Finish, into next assembling cyclic process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510824045.5A CN105312898B (en) | 2015-11-24 | 2015-11-24 | The mechanical device and assembly method of a kind of square ball valve automatic setup system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510824045.5A CN105312898B (en) | 2015-11-24 | 2015-11-24 | The mechanical device and assembly method of a kind of square ball valve automatic setup system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105312898A CN105312898A (en) | 2016-02-10 |
| CN105312898B true CN105312898B (en) | 2017-07-28 |
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|---|---|---|---|
| CN201510824045.5A Expired - Fee Related CN105312898B (en) | 2015-11-24 | 2015-11-24 | The mechanical device and assembly method of a kind of square ball valve automatic setup system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155554A (en) * | 2011-04-22 | 2011-08-17 | 绥中泰德尔自控设备有限公司 | Flow-distribution plate of electric ball valve and assembling method of flow-distribution plate |
| CN204221327U (en) * | 2014-11-21 | 2015-03-25 | 浙江新大塑料管件有限公司 | A kind of ball valve sealing ring profiling adsorption pressure assembling device |
| CN204381813U (en) * | 2014-12-11 | 2015-06-10 | 浙江华龙巨水科技股份有限公司 | Ball valve group is installed |
| CN205290348U (en) * | 2015-11-24 | 2016-06-08 | 徐州德胜石油机械有限公司 | Mechanical device of square ball valve automatic assembly system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3371759B2 (en) * | 1997-06-16 | 2003-01-27 | 松下電器産業株式会社 | Mounting method of conductive ball |
-
2015
- 2015-11-24 CN CN201510824045.5A patent/CN105312898B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155554A (en) * | 2011-04-22 | 2011-08-17 | 绥中泰德尔自控设备有限公司 | Flow-distribution plate of electric ball valve and assembling method of flow-distribution plate |
| CN204221327U (en) * | 2014-11-21 | 2015-03-25 | 浙江新大塑料管件有限公司 | A kind of ball valve sealing ring profiling adsorption pressure assembling device |
| CN204381813U (en) * | 2014-12-11 | 2015-06-10 | 浙江华龙巨水科技股份有限公司 | Ball valve group is installed |
| CN205290348U (en) * | 2015-11-24 | 2016-06-08 | 徐州德胜石油机械有限公司 | Mechanical device of square ball valve automatic assembly system |
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| CN105312898A (en) | 2016-02-10 |
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